Home / 190,090.80-285,136.20-188,778.60

Finding the Fourth Proportional to 190,090.80, 285,136.20 and 188,778.60

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Solution

The fourth proportional to 190,090.80, 285,136.20 and 188,778.60 is: 283,167.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,090.80 : 285,136.20 = 188,778.60 : x
  2. Step 2: Convert to fraction form
    190,090.80/285,136.20 = 188,778.60/x
  3. Step 3: Cross multiply
    190,090.80x = 285,136.20 × 188,778.60
  4. Step 4: Simplify right side
    190,090.80x = 53,827,612,645.32
  5. Step 5: Solve for x
    x = 53,827,612,645.32/190,090.80
  6. Step 6: Final answer
    x = 283,167.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.